<template>
  <div class="tab-control">
    <div v-for="(item,index) in titles" :key="index" @click="itemClick(index)" class="tab-control-item" :class="{active:index == currentIndex}">
      <!-- 畅销，新书，精选 -->
      <span>{{item}}</span>
    </div>
  </div>
</template>

<script>
  import {ref} from 'vue';
  export default {
    name: "TabControl",
    props: {
      titles: {
        type: Array,
        default () {
          return [];
        }
      }
    },
    setup(props,{emit}) {
      let currentIndex = ref(0);
      const itemClick = (index) => {
        currentIndex.value = index;
        emit('tabClick',index)
      }
      return {
        currentIndex,
        itemClick
      }
    }
  }
</script>

<style scoped lang="scss">
  .tab-control {
    display: flex;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-size: 14px;
    background-color: white;
    width: 100%;

    z-index: 10;

    position: sticky;
    top: 44px;

    .tab-control-item {
      flex: 1;

      span {
        padding: 6px;
      }
    }

    .active {
      color: var(--color-tint);

      span {
        border-bottom: 3px solid var(--color-tint);
      }
    }
  }
</style>